1998 GMC Jimmy Loud Airplane Noise

1998 GMC JIMMY
110,000 MILES • 6 CYL • 4WD • AUTOMATIC
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98JIMMYPROBS
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  • 1 POST
I have a 98 Gmc jimmy that has a loud airplane sound occuring. I dont hear this noise all the time but when i do it gets louder when i accelerate. Can anybody help me figure this thing out.. Thanks in advance
Oct 1, 2009 at 4:31 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
The sound is most likely from the fan. The vehicle has a fan clutch that is to lock up at a certain temp. When the temp is met, the fan spins full speed and makes a sound like you described.
Oct 5, 2009 at 1:55 AM
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